Colne Valley MP and Conservatives candidate Jason McCartney has admitted he "hasn't slept for days".
He is at the count for the constituency of Colne Valley, taking place in Huddersfield this morning.
Official declaration is expected at 04:30.
Colne Valley MP Jason McCartney: "We've worked our socks off. The harder we work the luckier we get." @itvcalendar
Vince Cable has lost his Twickenham seat to the Conservatives.
A list of the estimated result declaration times for the 73 constituencies in Yorkshire and Lincolnshire.
The polling stations have closed and the verdict is on its way. Find out how you can follow the Election 2015 count in your area.